Dry-process gold-machine.



D. M. OWINGS & W. M. OSBORN.

DRY PROCESS GOLD MACHINE.

APPLICATION FILED MAR. 16, 1911.

1 ,OO6,267, Patented Oct. 17, 1911.

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D. M. OWINGS & W. M. OSBORN.

DRY PROCESS GOLD MACHINE. APPLIOATION- FILED MAR. 16, 1911.

Patented Oct. 17,1911.

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DAVID M. OWINGS AND WILLIAM M. OSBORN, OF CANTON, OKLAHOMA, ASSIGNORS OFONE-HALF TO ALLEN C. FRAZIER AN D EDWARD C. FRAZIER, OF CANTON,OKLAHOMA.

DRY-PROCESS GOLD-MACHINE Specification of Letters Patent.

Application filed March 16, 1911.

Patented Oct. 17, 1911. Serial No. 614,858.

To all whom it may concern:

Be it known that we, DAVID M. Owmcs and WILLIAM M. OSBORN, citizens ofthe United States, residing at Canton, in the county of Elaine and Stateof Oklahoma, have invented certain new and useful Improvements inDry-Process Gold-Machines; and we do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to improvements in dry process gold machines.

One object of the invention is to provide a machine of this characterhaving means whereby the sand is pulverized or reduced to a finecondition and then subjected to an air blast which will separate theprecious metal from the sand.

Another object is to provide means whereby both the heavier grades andthe flour gold will be caught while the sand will be discharged from themachine.

With the above and other objects in view, the invention consists ofcertain novel features of construction, combination and arrangement ofparts as will be more fully described and particularly pointed out inthe appended claims.

In the accompanying drawings: Figure 1 is a side view of our improveddry process gold machine; Fig. 2 is a top plan view; Fig. 3 is anenlarged vertical longitudinal section; Fig. 1 is a vertical crosssection on the line lt of Fig. 3; Fig. 5 is a detail cross sectionalview on the line 55 of Fig. 3 showing the arrangement of the air blastfan.

Referring more particularly to the drawings 1 denotes the supportingframe of the machine in one end of which is arranged a gold collectingbox 2 comprising removabletop and side pieces 3 and 4; and an outer endpiece in the form of a door 5 which is hinged at its upper edge to theadjacent upper portion of the frame and is fastened in a closed positionby a suitable catch 6. The gold collecting box 2 has no bottom and belowthe same and resting on the bottom of the frame 1 is a tank 7 adapted tocontain mercury. In the outer portion of the box over the tank 7 isarranged an inclined wind or air deflecting board 8. On the inner sidesof the side boards 41 and on both sides of the deflecting board 8 arearranged coverings 9 of fur or other similar fibrous material, while theinner side of the top 3 is provided with a covering 10 of feathers orsimilar fibrous material. In the end of the box below the outer end ofthe deflecting board 8 is formed a discharge opening 11 through which.the sand is discharged after being separated from the gold.

Arranged on a superstructure 12 above the opposite end of the frame fromthat containing the box 2 is an ore chute 13 at the lower end of whichis arranged a hopper 14 adapted to receive the sand and ore prior to thefeeding of the same to the machine. In the top of the frame and bottomof the hopper is formed an inlet passage 15 over which is revolublymounted a feed roller 16 having formed therein a series oflongitudinally disposed grooves or channels 17 which form pockets toreceive the ore and to discharge the same into measured quantitiesthrough the passages 15 and in the machine. Above the upper end of thechute 13 is arranged an inclined screen 18 the lower end of which isconnected with a hopper 19 hav ing arranged therein a pair of revolublymounted transversely disposed crushing rolls 20. The sand or ore to beseparated by the machine is discharged onto the screen 18 and the partof the material which is fine enough to be acted upon by the separatingmechanism will pass through the screen into the chute 13, while thecoarser particles of the sand and ore will pass out over the screen andinto the hopper 19 where it will be acted upon by the crushing rolls 20,which will reduce the ore and sand to the same fineness as that whichpassed through the screen, said reduced ore and sand passing throughbetween the rolls and into the chute 13 and from thence into the feedhopper lat from whence it is discharged in measured quantities by thegrooved roller 16 into the machine as hereinbefore described.

The sand and ore after being discharged into the machine in the mannerdescribed fall onto transversely disposed inclined amalgamated plates 21arranged across the frame of the machine as shown in Fig. 3 of thedrawings. Below the plates 21 is arranged a sand board 22. The sand infalling onto and between the plates 21 is subjected to a strong blast ofair from a blast fan 23 which is revolubly mounted in a suit I able fancasing 2ft arranged in the end of the machine and extending transverselyacross the same as shown. The fan casing and the fan 23 are of the samewidth as the frame of the machine so that the air blast or current willextend across the machine and upon striking the fine sand and orefalling through the discharge passages 15, will blow said sand and orethrough the box 2. In thus being blown through the box the heavierparticles of the ore will fall into the tank 7 containing mercury andwill be held by the latter while the sand will be blown on through thedischarge opening 11 in the opposite end of the machine. The

what we claim is:

very fine or fiour gold will be blown into engagement with the coveringsor linings of i I porting frame, a collecting box arranged 1n wool orfeathers on the inner sides of the top and sides of the box and on thedeflecting board 8 whereby said flour or fine gold will be caught andretained by the wool or feather lining or coverings. By this means itwill be seen that all of the gold will be separated from the sand andthe latter discharged from the machine. After the operation is completedor whenever desired the sides and top of the box may be readily removedand the fine gold accumulated thereon or caught thereby may be readilyremoved. In order to facilitate this removal of the sides and top of thebox, said parts are preferably tongue and grooved together and fastenedby means of bolts 25 having thereon thumb nuts 26 as clearly shown inFigs. 3 and 4 of the drawings.

On the outer end of the shafts of one of the crushing rolls 20 isfixedly mounted a drive pulley 27. On the end of this shaft is alsofixedly mounted a spur gear 28 which meshes with a similar gear 29 onthe ad jacent end of the other crushing roll whereby said rolls aredriven. On the opposite end of the shaft having the drive pulley 27 isfixedly mounted a belt pulley 30 which is connected by a belt 31 to apulley 32 on the adjacent end of the fan shaft whereby the fan is drivenin the proper direction. On the fan shaft adjacent to the pulley 32 isfixedly mounted a belt pulley 33 which is connected by a belt 34 to apulley 35 on the adjacent end of the shaft of the feed roller 16 wherebysaid roller is driven in the proper direction for discharging the oreinto the machine as described.

It is to be understood that the term fibrous as employed in thespecification and claims in this case is intended to cover the materialhaving a pile-like surface such as would be capable of arresting theparticles of gold dust passing through the machine.

From the foregoing description taken in connection with the accompanyingdrawings the construction and operation of the invention will be readilyunderstood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details ofconstruction may be resorted to without departing from the pinciple orsacrificing any of the advantages 1 of the invention as defined in theappended claims.

Having thus described our invention,

1. In a dry process gold machine, a supone end of said frame, said boxhaving in its end a discharge opening and having its sides and topformed in detachably connected sections, a door arranged in the outerend of the box above the discharge opening therein, a deflecting boardarranged in the outer end of the box, gold collecting coverings arrangedon the inner surfaces of the sides and top of the box and on theopposite side of said board, means to feed the gold bearing material tothe machine, metal collecting plates arranged across the machine belcwthe feed opening therein and means whereby a blast of air is forcedthrough the material fed to the machine and said material thereby blownthrough said collecting box.

2. In a dry process gold machine, a supporting frame, a collecting boxarranged in one end of said frame and having a discharge opening in oneend, a deflecting board arranged in the outer end of the box, a fibrouscovering arranged on both sides of said board, a fibrous coveringarranged on the inner face of the top of said box, means to feed goldbearing material to the machine, and means for forcing a blast of airthrough the material fed to the machine, said material being therebyblown through said collecting box.

In testimony whereof we have hereunto set our hands in presence of twosubscribing witnesses. DAVID M. OIVINGS.

WILLIAM M. OSBORN. Htnesses LEE LEsLIE, GEORGE W. BURRELL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

